Grease resistance and mechanical properties of isolated soy protein-coated paper

Hyun J. Park, Si H. Kim, Seung T. Lim, Dong H. Shin, Sang Y. Choi, Keum T. Hwang

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63 Citations (Scopus)


Grease-resistant paper has been produced by coating paper with isolated soy protein (ISP). Tensile strength (TS) of ISP-coated paper is 28-30 MPa (between the TS of paper and of ISP film). TS of the ISP-coated paper (2.3 kg/ream) was highest (36.0 MPa) among other ISP-coated papers, but elongation (E) of the papers seemed to decrease (though not statistically significantly) as the thickness of the ISP coating increased. ISP-coated papers were highly impermeable to grease penetration for the first 2 h of the test. The percent stained area of two commercially used polyethylene-laminated papers was higher than those of ISP-coated papers. As the amount of plasticizer (a mixture of glycerol and polyethylene glycol) was increased in ISP-coated paper, the TS decreased and the E increased. When tested, the percent stained areas of the paper containing 0.6 and 1.0 g plasticizer/g protein were lower for the first 2 h than those of the papers containing 0.0 and 0.2 g plasticizer/g protein. Also, percent stained area increased with time. Grease resistance of papers coated with ISP at levels higher than 2.0 kg/ream was equal to or lower than that of polyethylene laminates used for quick-service restaurant sandwich packaging.

Original languageEnglish
Pages (from-to)269-273
Number of pages5
JournalJAOCS, Journal of the American Oil Chemists' Society
Issue number3
Publication statusPublished - 2000 Mar

Bibliographical note

Funding Information:
This paper was supported by grant No. 1999-2-220-009-4 from the interdisciplinary Research Program of the Korea Science and Engineering Foundation.

ASJC Scopus subject areas

  • General Chemical Engineering
  • Organic Chemistry


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